Can a flameproof gas explosion-proof box be used for dust?

Flameproof TypeGasexplosion-proofBoxUpWithUsersInnonflammableDustEnvironment，InvincibleUpWithUsersInflammableDustEnvironment，flammableDustEnvironmentWithdedicatedDust Explosion-proofBox。

Combustible DustWithwhichsome？

Combustible dust roughly includes aluminum powder, zinc powder, ferrosilicon powder, magnesium powder, iron powder, aluminum processing and grinding powder, various plastic powders, intermediates of organic synthetic drugs, wheat flour, sugar, wood chips, dyes, bakelite ash, milk powder, tea powder, tobacco powder, coal dust, plant fiber dust, etc. The reason these material dusts are prone to explosion and combustion is that they contain strong reducing elements such as H, C, N, S, etc. When they coexist with peroxides and explosive dust, decomposition occurs, producing a large amount of gas through oxidation reactions, or although the gas volume is small, it releases a large amount of combustion heat.For example, aluminum powder has an explosion hazard even in a carbon dioxide atmosphere. These dust environments cannot use flameproof gas explosion-proof boxes.。

Why can flameproof gas explosion-proof boxes not be used in combustible dust environments?？

Flameproof and dust explosion-proof are two different explosion-proof types, each with their own explosion-proof standards.。

The flameproof standard is national standard GB3836.1 and GB3836.2, namely Part 1 of explosive atmospheres - General requirements for electrical equipment and Electrical equipment protected by flameproof enclosures, with the explosion-proof mark "d", applicable to explosive gas atmospheres.。

The dust explosion-proof standard is national standard GB12476.1 and GB12476.5, namely Electrical apparatus for use in the presence of combustible dust - General requirements and Electrical apparatus protected by dust-tight enclosures, with the explosion-proof mark "tD", applicable to combustible dust environments.。（IIICIsWithFront的Dust Explosion-proofmark，On-siteinInnovationStandardSystemOneModificationFortD）

In Summary ，flammableDust And conductElectricDustInvincibleAbilityUseFlameproof TypeGasexplosion-proofBox，needUseDust Explosion-proofBox。